ethr.link - open source link shortener based on smart contract and github pages

I'd like to show you my first project with ethereum smart contracts. I've created a link shortener that is completely based on a smart contract and statically served from github pages. It interacts with the blockchain via web3.js.

Each shortened link costs a few milli ether. Pricing is based on key length (the shorter, the more expensive) and on the validity period.E.g. ethr.link/hi would cost you 8 milli ether per 30 days.